Obs. : 2009-11-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.848e+11
Venus      3.586e+11
Earth      3.482e+11
Mars       3.500e+11
Jupiter    3.626e+11
Saturn     3.479e+11
Uranus     3.519e+11
Neptune    3.626e+11
Pluto      3.829e+11